The reason for double helical structure of DNA is operation of
The reason for double helical structure of DNA is operation of
- electrostatic attractions
- dipole-dipole interaction
- van der Waal's forces
- hydrogen bonding
Answer
The two polynucleotide chains or strands of DNA are linked up by hydrogen bonding between the nitrogenous base molecules of their nucleotide monomers. Adenine-Thymine (two hydrogen bonds) and Cytosine-Guanine (three hydrogen bonds).
The correct option is D.